Automatic oiler.



R. WOOD.

AUTOMATIC OILER.

APPLIUATION FILED 111111.21, 1911.

1,992; 94.` Patented Apr. 7, 1914 @wozu/11cm @wimm l faf/P Waan R. WOOD.

AUTOMATIG OILBR.

APPLICATION FILED AUG. 21, 1911.

' Patented Apr. 7, 1914 2 SHEETS-SHEBT 2.

COLUMBIA LANOURAPH TED STATESMTENT OFFCE.

ROBERT WOOD, OF WESTMOUNT, QUEBEC, CANADA, ASSIGNOR T0 NATI-IAN MANUFAC- TUBING CO., 0F NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

AUTOMATIC OILER.

and I do hereby declare that the following is a full, clear, and exact description of the same.

The object of my invention is to improve the general construction of automatic lubricating devices in order to obtain a more satisfactory operation than heretofore.

For full comprehension, however, of my invention reference must be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate the same parts and wherein- Figure l is a transverse vertical sectional view of my improved oiler, with the parts in the position assumed when the suction is exerted; Fig. 2 is a plan view thereof; Fig. 3 is a view similar to Fig. l with the parts in a different operative position that is to say under the influence of compression; and Fig. t is a diagrammatical view of the automatic oiling system.

My improved automatic oiler may be used singly or in multiple and in any position in which it is desired to place the same, but for the salie of clearness and brevity will now proceed to describe the application of a single oiler to a piston cylinder of a steam engine, it being understood that my invention may be also applied with advantage to gas engine cylinders, petrol engine cylinders, or other combustion chambers.

Referring now to the drawings ZJ indicates the oil reservoir which is of any preferred construction. The reservoir is filled by means of a hole in the top thereof provided with a cylindrical sieve o extending therefrom into the interior of the reservoir through which sieve the oil passes and becomes separated from any foreign matter which may be therein. A plug is provided for the top hole and has an air inlet CZ to create the necessary atmospheric pressure in the reservoir.

As is well known in the art, the oil is first drawn by suction from the reservoir into an oil supply pipe and then forced from the same into a steam supply pipe Specification of Letters Patent.

Application led August 21, 1911.

Patented Apr. 7, 1914:.

serial No. 645,184.

with which it is connected as shown diagrammatically in Fig. 4; and to accomplish this action an improved pump mechanism is 'provided in combination with valve mechanism, to be presently described.

Upon the front of the reservoir is bolted, as at g, a casting ZL which constitutes a support for and a means of communication between the several parts of the oil injecting mechanism to be now described.

lVhen the oil is being drawn from the reservoir and subsequently forced through the supply pipe it is necessary to provide valve mechanism to protect the reservoir outlet and the supply pipe from back pressure and this valve mechanism is contained in a stand-pipe situated between the outlet i and pipe j and comprising a bottom oil valve chamber having the outlet t' leading thereinto and a top gravity valve chamber in communication with and connected to the bottom valve chamber by a glass cylinder 7c which is filled with water or other suitable liquid and forms a water sight glass which by reason of the just mentioned valve mechanisms, is never subjected to a compressive force. Within the oil valve chamber is a hollow perforated plug Z of less diameter than the interior of the chamber so as to present an annular space for the oil completely surrounding the plug, the oil supply being by this means not appreciably checked, while, in passing through the perforated plug it receives a second straining to relieve it of any foreign matter contained therein. The plug is open at its upper side, and is inserted into the chamber from below and screwed into the chamber from below and screwed into place as seen in the drawing, by means of the enlarged hexagonal head m which also serves to close the lower side of the chamber, left open for the insertion of the plug. A hollow nozzle ot is screwed in place and rests upon the top of the plug Z, communicating with the interior of the latter at one end and having a small outlet Z into the cylinder Z0. The nozzle is rigidly held in alinement with the plug by means of an integral ring 20 upon the underside thereof which enters into a correspondingly formed groove in the top surface of the said plug.

In order to provide means for ascertaining the quantity of oil being used, the water sight gage 7c is provided and is filled with water to facilitate the conveyance of oil into the top valve chamber. So to prevent the water in the gage from entering the lower valve chamber through the nozzle, I provide a ball valve r situated within such nozzle and normally held in place closingthe upper open end of the perforated plug by means of a spring s bearing between a squared portion of the valve and the interior top wall of the nozzle. The tension of the spring s is such that when suction is exerted upon the valve by means of the piston mechanism, it will permit such valve to be lifted from its closing position and allow the oil to iind its way up around the valve, through the nozzle and so in globules to the top valve chamber.

The opening from the uppervalve chamber to the sight gage is normally closed by a gravity valve t guided by a short spindle u extending from the top thereof into a recess formed in a plug v closing the top of said valve chamber. This gravity valve is lifted as suction is exerted and allows the oil, as before mentioned, to gather in the upper valve chamber preparatory to being injected into the supply pipe y' but remains tightly closed under compression thus protecting the sight glass.

The piston mechanism before mentioned which is adapted to cause a compression and create a suction is preferably in the form of a pipe length wor the like which for convenience in construction extends from the Lipper valve chamber rearwardly through the casting /t and the o-il reservoir b where it is coupled with a steam pipe m leading from the piston cylinder y.

At a point adjacent to the oil reservoir I provide a valve 7 of any preferred construction for the purpose of regulating the entry of steam to the pipe w (wherein is located theoil pump piston 2) and which is milled to fit the said pipe to and to further promote the efiiciency of the piston in creating suction and in its compressive action I form at intervals along its length a number of circumferential grooves 3 in which gather a portion of the o-il that has been drawn into the upper valve chamber, so that the contacting surfaces are thoroughly lubricated.

The passage between the piston chamber w and the top valve chamber is reduced in size as at 9 at a point adjacent to the said top valve chamber and is tapered toward the latter, terminating ina comparatively small orifice leading thereinto so that when the piston 2 moves forward the compression formed in the passage is accelerated at the orifice for a purpose to be hereinafter described. The reservoir b is formed to accommodate the valve 7 so as to bring the latter within the compass of the reservoir and to do away with any projections which would be liable to interfere with the ready positioning of the oiler.

The passage through the reduced portion 9 is regulated by a vertically disposed spindle valve 14 screw threaded in the casting h and presenting a tapered lower end which is adapted when in its lowermost position to enter a depression 6 in the lower side of the portion 9 so that when in this position it completely closes the passage through this reduced portion.

Between the end of the piston and the shoulder formed by the reduced portion of the air tight compartment is located a coiled spring 4, the end of the piston being re duced to accommodate the'adjacent endy of such spring which is adapted to return the.

piston to its normal position after it has been moved forward by the steam from the pipe x and so create a suction.

The oil supply pipe j leading from the upper valve chamber is preferably connected with the main steam supply pipe and.l projects thereinto a short distance as at 50, the end of the pipe adjacent to the said valve chamber being provided with a back pressure valve 5 which is normally held in closing position againstthe opening between'the valve chamber and the said pipe by a spring 6a the compressiveforce when exerted overcoming the spring 6a, thereby allowing t-he oil to be carried into the pipe j and so to the piston cylinder.

The'provision of the valve 7 enables the admission of steam to the oil pump chamber to be regulated andas it may be desired for various reasons to vary the quantity of oil injected into thepiston cylinder, it thereby becomes necessary either to change the stroke of the piston or otherwise regulate the suction as for instance by the spindle valve 14. .As it would not be practical to continuously run the piston at its longest stroke and curtail the suction by the spindle valve 141 on account of exposing the wo-rking parts of the oil pump mechanism such as the piston itself and the spring, to an unnecessary amount of wear and tear I prefer to reduce the quantity of steam admitted to the piston chamber thereby moving the ram only sufficiently to obtain the necessary suction for the required quantity of oil, which quantity can be ascertained by the sight gage if. To obtain the best results it has been found advisable to adjust-the spindle valve at half position and to regulatev the stroke of the piston by the steam valve 7.

Operation: The supply pipe j and lower valve chamberbeing primed, the cylinder primarily lubricated as usual, and the valves adjusted as required, the oiler is in condi` tion for operation. Upon the admission of steam to the piston chamber and before the expansion of the same takes place, the steam being' at this time at its highest efficiency, a portion of the same finds its way through the pipe 0c to the oil pump chamber and forces the piston forward, the resultant compression in the chamber being communicated to the oil supply pipe j thereby ejecting a quantity of oil therefrom into the main steam supply pipe and so to the cylinder. The pressure of the steam may become reduced as it is passing through the pipe m and to counteract this l have formed the opening of the chamber w leading into the upper valve chamber with an orifice of reduced size and preferably conically shaped so that the compression caused by the piston, assumes a pressure, as it passes through this orifice, in excess of that of the steam pressure thereby insuringthe pro-per eject-ion of the oil from the pipe y'. As the steam is momentarily shut off by the slide or other design of valve (not shown) the steam supply to the piston chamber is also shut off, allowing the spring to return the piston to its normal position thereby causing a suction within the upper chamber, raising the gravity valve t', the valve r, and the oil, being lighter than the water in the sight glass and therefore influenced to a greater extent than the latter, is drawn from the lower valve chamber to the upper valve chamber, the oil forming into globules at the nozzle and rising therefrom to the said upper valve chamber. The return action of the piston exhausts the residue from the pipe m, to the piston cylinder. As the next admission of steam is supplied to return the piston thus completing one revolution, a quantity of oil equal to that which has been previously drawn up into the piston chamber, is then ejected and carried by the steam into the cylinder and being broken up into spray form, is carried by the steam as it swirls around within the cylinder and thereby becomes distributed over the entire interior surface of the cylinder at that point so that when the piston again moves forward the cont-acting surfaces thereof and the cylinder are lubricated, thus at each admission of steam a quantity of oil is admitted therewith which lubricates the cylinder at each stroke of the piston.

l claim:

l. In an automatic oiler, the combination with a reservoir, of a stand-pipe supported by the reservoir and including a bottom valve chamber adapted to receive the oil from the reservoir, a hollow perforated plug within the bottom valve chamber, through which the oil passes, a top valve chamber, an oil supply pipe communicating with the top valve chamber, a sight gage in communication with and connecting the two valve chambers and adapted to convey the oil from one valve chamber1 to the other, a nozzle guiding the oil from the hollow plug into the gage, a back pressure valve within the nozzle, a gravity valve controlling the communication between the gage and the top valve chamber, a pump chamber, a passage leading from the pumpchamber to the top valve chamber, such passage being reduced in diameter adjacent to the top valve chamber and tapered to a substantially small orifice leading into the latter, a motive power conduit leading to the pump chamber, a piston in the pump chamber and adapted to be moved in one direction by the motive power in the conduit, a spring adapted to move the piston in the opposite direction and a back pressure valve within the oil supply pipe, for the purpose set forth.

2. In an automatic oiler, the combination with a reservoir, of a stand-pipe supported by the reservoir and including a bottom valve chamber adapted to receive the oil from the reservoir, a hollow perforated plug within the bottom valve chamber, through which the oil passes, a top valve chamber, an oil supply pipe communicating with the top valve chamber, a sight gage in communication with and connecting the two valve chambers and adapted to convey the oil from the hollow plug into the top valve chamber, a nozzle guiding the oil from the hollow plug into the sight gage, a back pressure valve within the nozzle, a gravity valve controlling the opening between the top valve chamber' and the sight gage, a pump chamber, a passage leading from the pump chamber to the top valve chamber, such passage being reduced in diameter adjacent to the top valve chamber and tapered to a substantially small orifice leading into the latter, a motive power conduit leading to the pump chamber, a valve controlling the passage through said passage, a piston in the pump chamber and adapted to be moved in one direction by the motive power in the conduit, a spring adapted to move the piston in the opposite direction, and a back pressure valve within the oil supply pipe, for the purpose set forth.

3. In an automatic oiler, the combination with a reservoir, of a stand-pipe supported by the reservoir and including a bottom valve chamber adapted to receive the oil from the reservoir, a top valve chamber, an oil supply pipe communicating with the top valve chamber, a sight gage in communication with and connecting the two valve chambers and adapted to convey the oil from one valve chamber to the other, a nozzle guiding the oil from the bottom valve chamber into the gage, a back pressure valve within the nozzle, a gravity valve controlling the communication between the gage and the top valve chamber, a pump chamber in communication with the top valve eharn- In testimony whereof, I have signed my ber, a motive power conduit leading to the name to this specification, in the presence of l0 pu1n]p chamber, a spring oontolled piston two subscribing witnesses. in t e Quino chamber and aca ted to be 5 moved iii oni;J direction by the nicijtive power ROBERT WOOD' n the conduit against the influence of the Witnesses: spring, and a back pressure valve within the STANLEY C. KING, oil supply pipe. JAMES C. FRASER.

Copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents,

. Washington, D. C. 

